Oats

Oats supply energy to the brain, which may improve learning. They are also rich in selenium, an antioxidant that has been shown to have protective effects in brain disorders and age-related cognitive problems. Fruited Granola is featured in AARP's book "ThinkFood: Recipes for Brain Fitness."

Split Peas

Split peas and other legumes are rich in folic acid, which in research studies has been shown to improve verbal and memory performance, and may delay the onset of Alzheimer's disease. Spinach Dhal is featured in AARP's book "ThinkFood: Recipes for Brain Fitness."